blower door test in london ontario

What is a Blower Door Test?

A blower door test is a diagnostic tool used to measure the airtightness of a building. By measuring the amount of air leaking in and out of the building, you can identify areas where energy is being wasted and make necessary repairs to improve the building’s efficiency. In this post, we will discuss what a blower door test is and how it can help your business save money on energy costs!

What happens in a blower door test?

A blower door is a big fan that is installed inside the frame of an outside door. The fan draws air out of the building, decreasing the internal air pressure. This difference in pressure between the inside and outside of the building causes air to flow through any cracks or openings in the building envelope. By measuring the rate of airflow, the blower door test can determine the airtightness of a building.

Can I be in the house during a blower door test?

Yes, you can be in the house during a blower door test. However, we recommend that you close all doors and windows to prevent air from flowing into or out of the building. You may also want to turn off any fans or other devices that could affect the results of the test.

How long does it take to perform a blower door test?

A blower door test usually takes about an hour to complete. However, the time can vary depending on the size of the building and the number of doors and windows that need to be sealed. It takes around 15 minutes for preparation and around 1 hour to complete the test in most homes.


Why is it important to have an airtight building?

blower door testAn airtight building is important for two reasons: energy efficiency and indoor air quality. By sealing up cracks and openings in the building envelope, you can prevent warm or cool air from escaping. This helps your HVAC system to work more efficiently, saving you money on energy costs. Furthermore, by keeping outside contaminants from entering the building, an airtight construction will help to improve indoor air quality.

A blower door is used by home energy professionals as a diagnostic instrument to assess how much air is entering or departing from your home. Contact Net Zero Insulation for blower door testing services in London, Ontario, and surrounding nearby areas.

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